tamron 500mm f8 help

barryl · 01-22-2014, 10:32 PM

i have just bought a tamron 500mm was supposed to be m42 thread it is not .it is close but my m42 adaptor will not screw on.if i measure it it does look like 42mm across is there possibly another adaptor i can use .i did see an m42 plus 75 but i am not sure what this means any help much appreciated or else i have thrown my money away

**jatrax** · 01-22-2014, 10:37 PM

Probably t-mount. M42 is 42x1mm t-mount is 42x.75mm thread. You will need an adapter to make it work. Get t-mount to k-mount no need for m42 in this case.

barryl · 01-23-2014, 12:03 AM

i have a t mount comeing for it should be here in a couple of days took a chance with that so hopefully that will work.the other thing i was going to try i have an olr lens and i was thinking of trying to swap mounts but its a bit sloppy and the screws look stuffed thanks for your help

Stone G. · 01-23-2014, 04:16 AM

Originally posted by barryl

i have just bought a tamron 500mm was supposed to be m42 thread it is not .it is close but my m42 adaptor will not screw on.if i measure it it does look like 42mm across is there possibly another adaptor i can use .i did see an m42 plus 75 but i am not sure what this means any help much appreciated or else i have thrown my money away

To the best of my knowledge, Tamron never produced a 500mm T2-mount prime lens. In fact, the only 500 mm prime lenses from Tamron that I know of are their Adaptall-2 mount mirror lenses (model 55B and 55BB).

So, may I suggest that you give us more information about brand and model number, such as you may read it directly on the lens itself.

barryl · 01-23-2014, 06:43 PM

tamron-popular serial no 75261 1;8 f =500mm thats all it has on i bought the t2 on the chance it would fit the lens but it probably will not turn up till next week the other thing it has written on it is a m1 or i at the screw end for the camera thats all i can find on it.i bought the lens hopeing i could find the right adaptor for it the person who owned it reckon they got rid of it and could not remember what adaptor went with it

**i_trax** · 01-23-2014, 10:34 PM

no this is not mirror lens, long narrow black tube still made ( very similar looking) by Samyang in South Korea

barryl · 01-23-2014, 11:17 PM

it has got made in japan not south korea basically the same lens glass is probably a bit better or worse

**i_trax** · 01-24-2014, 07:57 PM

Originally posted by barryl

it has got made in japan not south korea basically the same lens glass is probably a bit better or worse

absolutely, all old Tamrons were made in Japan but my latest one ( 18-270) is made in China........

barryl · 01-24-2014, 11:09 PM

do you think an adaptall would work i no nothing about them

**i_trax** · 01-24-2014, 11:23 PM

Originally posted by barryl

do you think an adaptall would work i no nothing about them

what do you mean, your lens is from pre Adaptall time and need T mount adapter?
I have probably more than dozen Adaptall and Adaptall2 lenses and they all have very different base.
Have a look at:
adaptall-2.org
you might be able to find some info about your lens, but I thing that your lans comes from late 50ties so might not be there.
the longest tele with T mount I can see there is 450mm:
Google Translate
anyway have a look.......

barryl · 01-24-2014, 11:29 PM

ok no worries i have the t adaptor comeing so i will see what happens thank for every ones help so far on this

**i_trax** · 01-24-2014, 11:33 PM

some info about mounts, inc T , T2 and TX verities :
SLR Lens Mount Identification Guide

**Ash** · 01-25-2014, 12:21 AM

How about posting a photo of your lens to give us a hand with identifying the lens and its mount?

barryl · 01-25-2014, 03:48 PM

hope this helps

barryl · 01-25-2014, 03:53 PM

2 more

01-22-2014, 10:32 PM	#1
barryl New Member Join Date: Jan 2014 Posts: 14	tamron 500mm f8 help i have just bought a tamron 500mm was supposed to be m42 thread it is not .it is close but my m42 adaptor will not screw on.if i measure it it does look like 42mm across is there possibly another adaptor i can use .i did see an m42 plus 75 but i am not sure what this means any help much appreciated or else i have thrown my money away

01-23-2014, 12:03 AM	#3
barryl New Member Join Date: Jan 2014 Posts: 14 Original Poster	t mount i have a t mount comeing for it should be here in a couple of days took a chance with that so hopefully that will work.the other thing i was going to try i have an olr lens and i was thinking of trying to swap mounts but its a bit sloppy and the screws look stuffed thanks for your help

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01-22-2014, 10:37 PM	#2
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	Probably t-mount. M42 is 42x1mm t-mount is 42x.75mm thread. You will need an adapter to make it work. Get t-mount to k-mount no need for m42 in this case.

01-23-2014, 04:16 AM	#4
Stone G. Pentaxian Join Date: Jun 2010 Location: North Zealand, Denmark Photos: Gallery \| Albums Posts: 1,516	Originally posted by barryl i have just bought a tamron 500mm was supposed to be m42 thread it is not .it is close but my m42 adaptor will not screw on.if i measure it it does look like 42mm across is there possibly another adaptor i can use .i did see an m42 plus 75 but i am not sure what this means any help much appreciated or else i have thrown my money away To the best of my knowledge, Tamron never produced a 500mm T2-mount prime lens. In fact, the only 500 mm prime lenses from Tamron that I know of are their Adaptall-2 mount mirror lenses (model 55B and 55BB). So, may I suggest that you give us more information about brand and model number, such as you may read it directly on the lens itself.

01-23-2014, 06:43 PM	#5
barryl New Member Join Date: Jan 2014 Posts: 14 Original Poster	tamron-popular serial no 75261 1;8 f =500mm thats all it has on i bought the t2 on the chance it would fit the lens but it probably will not turn up till next week the other thing it has written on it is a m1 or i at the screw end for the camera thats all i can find on it.i bought the lens hopeing i could find the right adaptor for it the person who owned it reckon they got rid of it and could not remember what adaptor went with it

01-23-2014, 10:34 PM	#6
i_trax Loyal Site Supporter Join Date: Jan 2011 Location: Perth Western Australia Photos: Gallery \| Albums Posts: 2,621	no this is not mirror lens, long narrow black tube still made ( very similar looking) by Samyang in South Korea

01-23-2014, 11:17 PM	#7
barryl New Member Join Date: Jan 2014 Posts: 14 Original Poster	it has got made in japan not south korea basically the same lens glass is probably a bit better or worse

01-24-2014, 07:57 PM	#8
i_trax Loyal Site Supporter Join Date: Jan 2011 Location: Perth Western Australia Photos: Gallery \| Albums Posts: 2,621	Originally posted by barryl it has got made in japan not south korea basically the same lens glass is probably a bit better or worse absolutely, all old Tamrons were made in Japan but my latest one ( 18-270) is made in China........

01-24-2014, 11:09 PM	#9
barryl New Member Join Date: Jan 2014 Posts: 14 Original Poster	do you think an adaptall would work i no nothing about them

01-24-2014, 11:23 PM	#10
i_trax Loyal Site Supporter Join Date: Jan 2011 Location: Perth Western Australia Photos: Gallery \| Albums Posts: 2,621	Originally posted by barryl do you think an adaptall would work i no nothing about them what do you mean, your lens is from pre Adaptall time and need T mount adapter? I have probably more than dozen Adaptall and Adaptall2 lenses and they all have very different base. Have a look at: adaptall-2.org you might be able to find some info about your lens, but I thing that your lans comes from late 50ties so might not be there. the longest tele with T mount I can see there is 450mm: Google Translate anyway have a look.......

01-24-2014, 11:29 PM	#11
barryl New Member Join Date: Jan 2014 Posts: 14 Original Poster	ok no worries i have the t adaptor comeing so i will see what happens thank for every ones help so far on this

01-24-2014, 11:33 PM	#12
i_trax Loyal Site Supporter Join Date: Jan 2011 Location: Perth Western Australia Photos: Gallery \| Albums Posts: 2,621	some info about mounts, inc T , T2 and TX verities : SLR Lens Mount Identification Guide

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01-25-2014, 12:21 AM	#13
Ash Loyal Site Supporter Join Date: Mar 2007 Location: Toowoomba, Queensland Photos: Gallery \| Albums Posts: 23,920	How about posting a photo of your lens to give us a hand with identifying the lens and its mount?